package cn.m.mt.util;
/** 
* 
* java类获取web应用的根目录 
* 
*/   
public class PathUtil {    
   
    /** 
      * @param args 
      */   
    public static void main(String[] args) throws Exception {    
         PathUtil p = new PathUtil();    
         System.out.println("Web Class Path = " + p.getWebClassesPath());    
         System.out.println("WEB-INF Path = " + p.getWebInfPath());    
         System.out.println("WebRoot Path = " + p.getWebRoot());    
     }    
   
    public String getWebClassesPath() {    
         String path = getClass().getProtectionDomain().getCodeSource()    
                 .getLocation().getPath();    
        return path;    
   
     }    
   
    public String getWebInfPath() throws IllegalAccessException {    
         String path = getWebClassesPath();    
        if (path.indexOf("WEB-INF") > 0) {    
             path = path.substring(0, path.indexOf("WEB-INF") + 8);    
         } else {    
            throw new IllegalAccessException("路径获取错误");    
         }    
        return path;    
     }    
   
    public String getWebRoot() throws IllegalAccessException {    
         String path = getWebClassesPath();    
        if (path.indexOf("WEB-INF") > 0) {    
             path = path.substring(0, path.indexOf("WEB-INF/classes"));    
         } else {    
            throw new IllegalAccessException("路径获取错误");    
         }    
        return path;    
     }    
}   
